Foldable climbing ladder for transformer maintenance

Abstract

The utility model relates to a folding climbing ladder for transformer maintenance relates to power engineering climbing ladder technical field for solving the problem that the climbing equipment used in the existing transformer maintenance scene can not give consideration to portable, stable and adapt to the demand of a variety of complex engineering environment, including folding assembly and connecting rod, folding assembly is two parallel settings, folding assembly includes a plurality of folding units that are sequentially arranged, and the folding unit includes a first ladder pole and a second ladder pole connected by a hinge, in every adjacent two folding units, the first ladder pole end of first folding unit is hingedly connected with the second ladder pole end of second folding unit, and the second ladder pole end of first folding unit is hingedly connected with the first ladder pole end of second folding unit, the folding unit of folding assembly first end end portion has a hook, the connecting rod is between two folding assemblies, and the end of connecting rod is fixedly connected with the folding assembly on the corresponding side, the utility model gives consideration to portable, stable characteristics, and can adapt to complex environment.

Description

Technical Field

[0001] This utility model relates to the field of power engineering ladder technology, specifically a folding ladder for transformer maintenance. Background Technology

[0002] In transformer maintenance scenarios, personnel often need to work at heights, and ladders are usually left on-site. To prevent unauthorized climbing, they must be locked and stored. Traditional straight ladders have a simple structure but poor stability, and longer ladders are inconvenient to transport. When unfolded, they take up a large area, making them difficult to use in confined spaces, resulting in poor convenience and safety for climbing. Existing climbing equipment cannot adequately balance portability, stability, and adaptability to various complex engineering environments. Utility Model Content

[0003] The purpose of this utility model is to provide a foldable ladder for transformer maintenance, which solves the problem that existing ladders used in transformer maintenance scenarios cannot simultaneously meet the requirements of portability, stability, and adaptability to various complex engineering environments.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: A folding ladder for transformer maintenance includes folding components and connecting rods. The folding components are two parallel ones, and each folding component includes a plurality of folding units arranged sequentially. Each folding unit includes a first ladder rod and a second ladder rod that are hinged together. In each pair of adjacent folding units, the end of the first ladder rod of the first folding unit is hinged to the end of the second ladder rod of the second folding unit, and the end of the second ladder rod of the first folding unit is hinged to the end of the first ladder rod of the second folding unit. The folding unit at the first end of the folding component has a hook. The connecting rods are multiple rods that are evenly spaced between the two folding components, and the ends of the connecting rods are fixedly connected to the folding components on the corresponding sides.

[0005] Furthermore, starting from one end of the folding assembly, the first and second ladder rods of the odd-numbered sequence folding units are connected by a connecting rod end hinge, and the first and second ladder rods of the even-numbered sequence folding units are connected by a hinge shaft end hinge.

[0006] Furthermore, the connecting rod has short shafts at both ends, and the first ladder rod and the second ladder rod are connected by short shaft hinges.

[0007] Furthermore, the folding unit at the second end of the folding assembly has a stop.

[0008] Furthermore, a guardrail is provided between the first ends of the two folding components.

[0009] Furthermore, the guardrail has a U-shaped structure, with the short shaft of the first end of the connecting rod passing through the first end of the guardrail, and the short shaft of the second end of the connecting rod passing through the second end of the guardrail.

[0010] Furthermore, the middle part of the connecting rod is a climbing and stepping part, and the cross-section of the climbing and stepping part is square.

[0011] Furthermore, the connecting rod includes a fixed rod and an extension rod. The fixed rod has hollow ends. The first end of the extension rod extends into the fixed rod and is slidably connected to it. The short shaft is located at the second end of the extension rod. The guardrail includes a main rod and a secondary rod. The main rod has hollow ends. The first end of the secondary rod extends into the main rod. The second end of the secondary rod is passed through by the short shaft.

[0012] The beneficial effects of this utility model are as follows: This utility model adopts a scissor-type telescopic structure, which enables rapid storage. In use, the hook is attached to the transformer body, and the folding assembly is pulled downwards to unfold. When climbing, personnel can hold or step on the connecting rod to climb, and the folding assembly can be kept unfolded, maintaining stability under the weight of the personnel. The tilt angle of the folding assembly can be adjusted according to the usage environment to meet the needs of different space sizes. Attached Figure Description

[0013] Figure 1 This is a three-dimensional view of the folded state of Embodiment 1 of this utility model;

[0014] Figure 2 This is a front view of the folded state of Embodiment 1 of this utility model;

[0015] Figure 3 This is a left view of the folded state of Embodiment 1 of this utility model;

[0016] Figure 4 This is a three-dimensional view of the unfolded state of Embodiment 1 of this utility model;

[0017] Figure 5 This is a left view of the unfolded state of Embodiment 1 of this utility model;

[0018] Figure 6 This is a front view of the folded state of Embodiment 2 of this utility model;

[0019] Figure 7 This is a front view of the folded state of Embodiment 3 of this utility model;

[0020] In the diagram: 1 Folding unit, 11 First ladder bar, 12 Second ladder bar, 13 Stop, 14 Hook, 15 Hinge shaft, 2 Connecting rod, 21 Climbing step, 22 Fixing rod, 23 Extension rod, 24 Short shaft, 3 Guardrail, 31 Main rod, 32 Secondary rod. Detailed Implementation

[0021] like Figures 1 to 7 As shown in the accompanying drawings, this utility model includes a folding assembly and a connecting rod 2. The structure and working principle of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] Example 1:

[0023] like Figures 1 to 5 As shown, a folding ladder for transformer maintenance includes a folding assembly and a connecting rod 2. Two folding assemblies are arranged in parallel. Each folding assembly includes several folding units 1 arranged sequentially. Each folding unit 1 includes a first ladder rod 11 and a second ladder rod 12 hinged together. In each pair of adjacent folding units 1, the end of the first ladder rod 11 of the first folding unit 1 is hinged to the end of the second ladder rod 12 of the second folding unit 1, and the end of the second ladder rod 12 of the first folding unit 1 is hinged to the end of the first ladder rod 11 of the second folding unit 1, thus forming a scissor-type telescopic structure. To facilitate the suspension of the entire ladder, a hook 14 is provided on the folding unit 1 at the first end of the folding assembly. Specifically, as shown... Figure 4 As shown, the hook 14 is fixed to the end of the first ladder bar 11 or the end of the second ladder bar 12.

[0024] Connecting rods 2 consist of multiple rods spaced evenly between the two folding components, with the ends of the connecting rods 2 fixedly connected to the corresponding folding components. Specifically, for example... Figure 1 As shown, starting from one end of the folding assembly, the first ladder rod 11 and the second ladder rod 12 of the odd-numbered sequence folding unit 1 are connected by an end hinge of the connecting rod 2, while the first ladder rod 11 and the second ladder rod 12 of the even-numbered sequence folding unit 1 are connected by an end hinge of the hinge shaft 15. The connecting rod 2 has short shafts 24 at both ends, and the first ladder rod 11 and the second ladder rod 12 of the odd-numbered sequence folding unit 1 are hinged together by the short shafts 24.

[0025] To ensure the stability of the folding assembly after it contacts the ground, a stop 13 is provided on the folding unit 1 at the second end of the folding assembly. Specifically, as shown... Figure 1 , Figure 3 and Figure 4 As shown, the stop 13 is fixedly connected to the end of the first ladder rod 11 or the second ladder rod 12 of the folding unit 1 at the second end of the folding assembly. The stop 13 has a pointed tip, which is used to contact the ground to prevent slippage. To adapt to ground with different flatness, the stop 13 and the first ladder rod 11 or the second ladder rod 12 can also be hinged to facilitate adjustment of the relative angle of the stop 13. A set screw is provided between the stop 13 and the first ladder rod 11 or the stop 13 and the second ladder rod 12 to achieve locking and fixing of the stop 13 and the first ladder rod 11 or the stop 13 and the second ladder rod 12.

[0026] To protect workers climbing at heights, a guardrail 3 is installed between the first ends of the two folding components. In use, after the hook 14 is attached to the transformer body, the first end of the folding component is positioned at a higher elevation. The guardrail 3 restricts the movement of workers climbing at heights, preventing electric shock. The guardrail 3 has a U-shaped structure, with the short shaft 21 of the first end of the connecting rod 2 passing through the first end of the guardrail 3, and the short shaft 21 of the second end of the connecting rod 2 passing through the second end of the guardrail 3. Both ends of the guardrail 3 are fixedly connected to the corresponding first ladder bar 11 or second ladder bar 12. The guardrail 3 is securely welded to the folding components, providing reliable fall protection for workers climbing at heights.

[0027] The folding assembly and connecting rod 2 are made of high-strength aluminum alloy, ensuring sufficient load-bearing capacity while reducing weight, making them easy to handle and operate.

[0028] The working principle of Embodiment 1 of this utility model is described below:

[0029] (1) In the non-use state, the entire ladder can be stored by compressing and folding the components, such as... Figure 1 As shown, the length of the entire ladder is at its minimum at this time. (2) When in use, hook 14 is hung on the transformer body, and the folding assembly is pulled to extend it. Personnel hold the stepping connecting rod to climb until they reach the working position.

[0030] Example 2:

[0031] The difference between Example 2 and Example 1 is as follows: Figure 6 As shown, the middle part of the connecting rod 2 is the climbing and stepping section 21, which has a square cross-section. The climbing and stepping section 21 increases the gripping and stepping area, ensuring safety. The outer wall of the climbing and stepping section 21 is provided with anti-slip patterns.

[0032] Example 3:

[0033] The difference between Example 3 and Example 1 is that the length of the connecting rod 2 is telescopic, thus the width of the entire ladder is adjustable. For example... Figure 7 As shown, the connecting rod 2 includes a fixed rod 22 and an extension rod 23. The fixed rod 22 has hollow ends. The first end of the extension rod 23 extends into the fixed rod 22 and is slidably connected to it. A short shaft 24 is located at the second end of the extension rod 23. The guardrail 3 includes a main rod 31 and a secondary rod 32. The main rod 21 has hollow ends. The first end of the secondary rod 32 extends into the main rod 31, and the second end of the secondary rod 32 is passed through by the short shaft 24. Both the main rod 31 and the secondary rod 32 include straight sections and arc-shaped sections. When the width of the ladder needs to be adjusted, a section of the extension rod 23 is pulled out from the fixed rod 22, and a section of the secondary rod 31 is pulled out from the main rod 32 to meet the hooking requirements of the entire ladder.

[0034] This utility model employs a scissor-type telescopic structure for rapid storage. In use, hook 14 is attached to the transformer body, and pulling down the folding assembly unfolds it. For climbing, personnel can hold or step on the connecting rod 2 to ascend, maintaining the unfolded state of the folding assembly and ensuring stability under their own weight. The tilt angle of the folding assembly can be adjusted according to the usage environment to meet the needs of different space sizes.

Claims

1. A folding ladder for transformer maintenance, characterized in that, The device includes folding components and connecting rods. Two folding components are arranged in parallel. Each folding component includes a plurality of folding units arranged sequentially. Each folding unit includes a first ladder rod and a second ladder rod hinged together. In every two adjacent folding units, the end of the first ladder rod of the first folding unit is hinged to the end of the second ladder rod of the second folding unit, and the end of the second ladder rod of the first folding unit is hinged to the end of the first ladder rod of the second folding unit. A hook is provided on the folding unit at the first end of each folding component. Multiple connecting rods are arranged at equal intervals between the two folding components, and the ends of the connecting rods are fixedly connected to the corresponding side of the folding component.

2. The folding ladder for transformer maintenance according to claim 1, characterized in that, Starting from one end of the folding assembly, the first and second ladder rods of the odd-numbered sequence folding units are connected by a connecting rod end hinge, and the first and second ladder rods of the even-numbered sequence folding units are connected by a hinge shaft end hinge.

3. A folding ladder for transformer maintenance according to claim 2, characterized in that, The connecting rod has short shafts at both ends, and the first ladder rod and the second ladder rod are connected by short shaft hinges.

4. A folding ladder for transformer maintenance according to claim 3, characterized in that, The second end of the folding assembly has a stop on the folding unit.

5. A folding ladder for transformer maintenance according to claim 4, characterized in that, A guardrail is provided between the first ends of the two folding components.

6. A folding ladder for transformer maintenance according to claim 5, characterized in that, The guardrail has a U-shaped structure, with the short shaft of the first end of the connecting rod passing through the first end of the guardrail and the short shaft of the second end of the connecting rod passing through the second end of the guardrail.

7. A folding ladder for transformer maintenance according to claim 6, characterized in that, The middle part of the connecting rod is the climbing and stepping part, and the cross-section of the climbing and stepping part is square.

8. A folding ladder for transformer maintenance according to claim 6, characterized in that, The connecting rod includes a fixed rod and an extension rod. The fixed rod has hollow ends. The first end of the extension rod extends into the fixed rod and is slidably connected to it. The short shaft is located at the second end of the extension rod. The guardrail includes a main rod and a secondary rod. The main rod has hollow ends. The first end of the secondary rod extends into the main rod. The second end of the secondary rod is passed through by the short shaft.

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